Many of the WLAN controllers are multilayer switches that can also route traffic at the Network layer (layer 3). WLAN controllers are often referred to as wireless switches because they are indeed an Ethernet-managed switch that can process and forward data at the Data-Link layer (layer 2) of the OSI model. ![]() At the heart of the centralized WLAN architecture model is the WLAN controller (see Figure 10.16).
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